Beyond Linux From Scratch - Version 6.0

Chapter 10. General Utilities

XScreenSaver-4.19

Introduction to XScreenSaver

The XScreenSaver is a modular
screen saver and locker for the X Window System. It is highly
customizable and allows the use of any program that can draw on the
root window as a display mode. The purpose of XScreenSaver is to display pretty pictures on
your screen when it is not in use, in keeping with the philosophy
that unattended monitors should always be doing something
interesting, just like they do in the movies. However, XScreenSaver can also be used as a screen
locker, to prevent others from using your terminal while you are
away.